Ironing-machine.



F. KRAPP. l IRONING MACHINE. APPLICATION FILED JUIVIVE 24, 1907.

Patentd N 0V. 3, 1908.

2 SHEETS-SHEET 1.

THE NoRRls FErERs co., vmsumanm, n. c..

F. KRAFP.

IRONING MACHINE.

APPLIUATION FILED JUNE 24, 1907.

902,823 Patented Nov.3,19os.

2 SHEETS-SHEET 2.

Tus NuRRls PETER.: ca, wAsmNoran. n. c,

FRIEDRICH KRAPP, OF DUSSELDORF, GERMANY.

IRONING-MACHINE Specification of Letters Patent.

Patented Nov. 3, 1908.

Application led .Tune 24, 1907. Serial No. 380,563.

To all whom it may concern:

Be it known that I, FRIEDRICH Knarr, a citizen of Germany, residing at Dusseldorf, Germany, have invented new and useful Im provements in Ironing-Machines, of which the following is a specification.

This invention relates to an improved ironing machine which is so constructed that a uniform heat of the flat iron for any length of time is maintained, while an overheating of the iron, which would result in singeing or scorching the goods is prevented.

In the accompanying drawings: Figure l is a vertical section through the principal parts of an ironing machine embodying my invention, and Figs. 2 to 6 are similar sections through modifications thereof.

The letter Z9, indicates the body of a hollow flat iron having a flat sole above the ironing table B. The upper curved part or side wall of the flat iron may be heated in any suitable manner, the drawing showing a pair of gas burners 7L, inclosed in a housing or heating chamber s, which is secured to the upper part of the iron. These burners thus heat the top of the iron, the heat being conducted through the body of the iron to its sole b. rIhe chamber a, within the iron is filled with water or any other volatilizable medium that prevents the iron from becoming overheated and simultaneously maintains an even heat.

In order to allow for the expansion of the water in chamber a, the latter communicates by an elbow duct m, and pipe a, controlled by valve c, with cup c, arranged above iron o. This cup is partly filled with a liquid of the same kind as contained in chamber a.

It is obvious that electricity, charcoal or any other suitable means may be used for heating the top of the flat iron, without departing from the spirit of my invention.

In Fig. 9., chamber a, is but partly filled with water and valve c, and cup e, are dispensed with. Pipe a', communicating with chamber a, is connected to a safety valve Z, that permits the discharge of the steam generated in chamber a, while a water inlet f, may be used for replenishing the water evaporated. A water gage g, having air vent p, and outlet d, may be carried by the flat iron for ascertaining the height of the water level in chamber a.

In Fig. 3, chamber a, is completely filled with water, while its pipe '19.2, communicates with an expansion pipe r, to compensate for the expansion of the water in the iron.

Fig, Ll, shows an iron provided with a normally closed water inlet f, communicating with elbow duct m, of chamber a.

In Fig. 5, the safety valve Z, shown in Fig. 2, is replaced by a steam outlet is, through which the steam generated in chamber a, may escape.

Instead of using a liquid for equalizing the heat of the flat iron, low pressure steam may be used, the steam entering through outer pipe 0, and escaping through inner pipe 0, (Fig. 6).

It will be seen that by my construction the fiat iron will be maintained at an even temperature for any length of time, the water or steam contained in such iron serving to equalize the temperature. Furthermore, the iron is prevented from being overheated, as the steam or water will allow only a limited temperature to be imparted thereto.

I claim:

I. An ironing machine comprising a hollow flat iron having a sole adapted to heat the work, side walls integral with the sole and projecting upwardly therefrom, external means for heating` said side walls, the heat thus generated therein being transmitted by conduction to the sole, and a vaporizable fluid within the hollow of the iron for preventing overheating of the same, substantially as specified.

2. An ironing machine comprising a hollow flat iron having a sole adapted to heat the work, side walls integral with the sole and projecting upwardly therefrom, external means for heating said side walls, the heat thus generated therein being transmitted by conduction to the sole, a Vaporizable Huid within the hollow of the iron for preventing overheating of the same, a pipe extending upwardly from the iron, a valve at the upper end of the pipe, and a cup surrounding said valve, substantially as specified.

Signed by me at Dusseldorf Germany this first day of J une 1907.

FRIEDRICH KRAPP.

Witnesses ALFRED POHLMEYER, M. ENGELS. 

